Practice Questions

TLS Online TPP Program

#Question id: 2208

Which of the following statements is a reasonable explanation for why unsaturated fatty acids help keep a membrane more fluid at lower temperatures?

#Unit 2. Cellular Organization

The double bonds form kinks in the fatty acid tails, preventing adjacent lipids from packing tightly.
Unsaturated fatty acids have a higher cholesterol content, which prevents adjacent lipids from packing tightly.
Unsaturated fatty acids are more nonpolar than saturated fatty acids.
The double bonds block interaction among the hydrophilic head groups of the lipids.

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TLS Online TPP Program

#Question id: 30052

#Unit 7. System Physiology – Animal

Which of the following channels opening contribute to the repolarization of the ventricular muscle fibers?

TLS Online TPP Program

#Question id: 21123

#Unit 12. Applied Biology

Which one of the following is a detection device or transducer for nucleic acid biological material?

TLS Online TPP Program

#Question id: 12116

#Unit 10. Ecological Principles

Which of the following is not required for a behavioural trait to evolve by natural selection?

TLS Online TPP Program

#Question id: 4125

#Unit 3. Fundamental Processes

Which of the following are features of the wobble hypothesis?

TLS Online TPP Program

#Question id: 3702

#Unit 3. Fundamental Processes

For the DNA strand 5'-TACGATCATAT-3' the correct complementary DNA strand is: